PMID- 24096214 OWN - NLM STAT- MEDLINE DCOM- 20140620 LR - 20220330 IS - 1872-6240 (Electronic) IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 1539 DP - 2013 Nov 20 TI - Depression, anxiety-like behavior and memory impairment are associated with increased oxidative stress and inflammation in a rat model of social stress. PG - 73-86 LID - S0006-8993(13)01307-3 [pii] LID - 10.1016/j.brainres.2013.09.033 [doi] AB - In the present study, we have examined the behavioral and biochemical effect of induction of psychological stress using a modified version of the resident-intruder model for social stress (social defeat). At the end of the social defeat protocol, body weights, food and water intake were recorded, depression and anxiety-like behaviors as well as memory function was examined. Biochemical analysis including oxidative stress measurement, inflammatory markers and other molecular parameters, critical to behavioral effects were examined. We observed a significant decrease in the body weight in the socially defeated rats as compared to the controls. Furthermore, social defeat increased anxiety-like behavior and caused memory impairment in rats (P<0.05). Socially defeated rats made significantly more errors in long term memory tests (P<0.05) as compared to control rats. Furthermore, brain extracellular signal-regulated kinase-1/2 (ERK1/2), and an inflammatory marker, interleukin (IL)-6 were activated (P<0.05), while the protein levels of glyoxalase (GLO)-1, glutathione reductase (GSR)-1, calcium/calmodulin-dependent protein kinase type (CAMK)-IV, cAMP-response-element-binding protein (CREB) and brain-derived neurotrophic factor (BDNF) were significantly less (P<0.05) in the hippocampus, but not in the prefrontal cortex and amygdala of socially defeated rats, when compared to control rats. We suggest that social defeat stress alters ERK1/2, IL-6, GLO1, GSR1, CAMKIV, CREB, and BDNF levels in specific brain areas, leading to oxidative stress-induced anxiety-depression-like behaviors and as well as memory impairment in rats. CI - (c) 2013 Published by Elsevier B.V. FAU - Patki, Gaurav AU - Patki G AD - Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX 77204, USA. FAU - Solanki, Naimesh AU - Solanki N FAU - Atrooz, Fatin AU - Atrooz F FAU - Allam, Farida AU - Allam F FAU - Salim, Samina AU - Salim S LA - eng GR - R15 MH093918/MH/NIMH NIH HHS/United States GR - R15G103327/PHS HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20131003 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 SB - IM MH - Animals MH - Anxiety/metabolism MH - Brain/*metabolism MH - Depression/metabolism MH - Disease Models, Animal MH - Inflammation MH - Male MH - Memory Disorders/metabolism MH - *Oxidative Stress MH - Rats MH - Rats, Long-Evans MH - Rats, Sprague-Dawley MH - Social Dominance MH - Stress, Psychological/*metabolism PMC - PMC4316676 MID - NIHMS533691 OTO - NOTNLM OT - Anxiety OT - BDNF OT - CAMKIV OT - ECL OT - ERK1/2 OT - GLO-1 OT - GSR OT - LE OT - Learning and memory and social defeat OT - Long-Evans OT - Oxidative stress: depression OT - P-CREB OT - PVDF OT - RAWM OT - SD OT - SDS-PAGE OT - SOD OT - SS OT - Sprague Dawley OT - T-CREB OT - brain derived neurotrophic factor OT - calcium/calmodulin-dependent protein kinase type IV OT - enhanced chemiluminescence OT - extracellular signal-regulated kinase-1/2 OT - glutathione reductase-1 OT - glyoxalase-1 OT - phospho-cAMP response element-binding protein OT - polyvinyledene difluoride OT - radial arm water maze OT - social stressed OT - sodium dodecyl sulfate polyacrylamide gel electrophoresis OT - superoxide dismutase OT - total-cAMP response element-binding protein COIS- Author disclosure: The authors declare no conflict of interest. EDAT- 2013/10/08 06:00 MHDA- 2014/06/21 06:00 PMCR- 2015/02/04 CRDT- 2013/10/08 06:00 PHST- 2013/05/28 00:00 [received] PHST- 2013/09/20 00:00 [revised] PHST- 2013/09/22 00:00 [accepted] PHST- 2013/10/08 06:00 [entrez] PHST- 2013/10/08 06:00 [pubmed] PHST- 2014/06/21 06:00 [medline] PHST- 2015/02/04 00:00 [pmc-release] AID - S0006-8993(13)01307-3 [pii] AID - 10.1016/j.brainres.2013.09.033 [doi] PST - ppublish SO - Brain Res. 2013 Nov 20;1539:73-86. doi: 10.1016/j.brainres.2013.09.033. Epub 2013 Oct 3.